Year: 2009
Type: conference-paper
Abstract: Previous shock initiation run‐to‐detonation experiments on energetic materials were plotted with distance and time to get a single distance/time to detonation. Modern shots utilize enough gauges so that the distance‐time data can be differentiated, which shows not only the usual inflection pressure point before detonation, referred to here as Pb, but also a second, low‐pressure inflection, referred to here as Pa, that marks rapid ramp‐up of the initiation. An analysis of the TATB based LX‐17 and PBX 9502 in addition to the LLM‐105 based RX‐55 data shows that both Pa and Pb increase linearly with the initiation pressure created by the flyer plate. This contradicts the current method in the Tarantula failure/dead zone model, which uses constant pressure boundaries between reaction regions. Modeling changes required by the new data will be considered.
Source: AIP conference proceedings
DOI: 10.1063/1.3295148
Institution: Lawrence Livermore National Laboratory
Language: English
Subfield: Mechanics of Materials
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2038259663